The demolition teams appeared to leave inhabited huts intact as they move through the camp's southern sector.

The government plans to relocate migrants to reception centres.

Those living in the camp, mainly from the Middle East, Afghanistan and Africa, hope to cross the Channel, often using people traffickers to try to enter illegally.

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One of the huts was on fire, and police used water canon to extinguish the blaze

At the scene: Anna Holligan, BBC News, Calais

Hidden by the cover of darkness, groups of migrants tried to access trucks on the motorway heading towards the port of Calais. Riot police fired tear gas, forcing them back.

On Monday the demolition squads moved through the Jungle. They were met by some resistance. A few migrants and protesters threw rocks in an effort to delay their eviction.

Little remains of the sprawling southern section of the settlement now.

The government is trying to encourage people to relocate to official accommodation provided inside converted shipping containers nearby. But most have refused the offer, fearing they'll be forced to claim asylum in France.

It's still unclear where the hundreds who've been evicted will go now.

They fear the changes mean they will be forced to give their fingerprints and claim asylum in France, dashing their dreams of reaching the UK.

The authorities believe some 1,000 migrants will be affected by the eviction plan while aid agencies say the number of people living there is much higher.

'Iron bars'

Clashes continued on Monday evening as groups of migrants fanned out across scrubland towards the motorway heading to the port of Calais, reports the BBC's Anna Holligan at the camp.

Officials say migrants can either move into heated container accommodation in the northern sector of the camp, where there is room for 1,500 people, move to similar accommodation centres elsewhere in France or claim asylum in France.

But many residents are reluctant to leave the Calais area.

"Going to Britain... is what people [here] want," Afghan migrant Hayat Sirat told AP. "So destroying part of the jungle is not the solution."

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Containers have been built to house some of the migrants

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The authorities want to clear a section of the south area of the camp